Dental stick



FIG. 1 is a perspective view of a dental stick;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a bottom plan view thereof.

The break lines shown in the middle portion of the dental stick in FIGS. 1 and 3-5 indicate that the appearance of any portion of the article between the break lines forms no part of the claimed design. 

CLAIM The ornamental design for a dental stick, as shown and described. 